CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net income (loss)	$ (5,632)	$ 988	$ 3,170
Other comprehensive income (loss) before income taxes
Unrecognized components of net periodic benefit costs	(204)	(8)	37
Unrecognized loss on derivative instruments	(13)	(29)	(2)
Unrecognized loss on marketable securities	(13)
Recognized components of net periodic benefit costs	25	16	24
Recognized loss on derivative instruments	11	12	6
Recognized loss on marketable securities	13		1
Other comprehensive income (loss) before income taxes	(181)	(9)	66
Income taxes related to other comprehensive income (loss)	13	(9)	24
Other comprehensive income (loss), net of income taxes	(168)	(18)	90
Total comprehensive income (loss)	(5,800)	970	3,260
Total comprehensive income (loss) attributable to noncontrolling interest	89	6	(6)
Total comprehensive income (loss) attributable to controlling interest	$ (5,889)	$ 964	$ 3,266